1. Download "cp910-os-x-062-9l.dmg.gz" from the download page.2. Double-click the downloaded file "cp910-os-x-062-9l.dmg.gz". The file will be extracted to a file named "cp910-os-x-062-9l.dmg".3. Double-click the file "cp910-os-x-062-9l.dmg". A disk image named "cp910-os-x-062-9l" will be mounted to your computer.4. In the "cp910-os-x-062-9l", double-click the setup file "SELPHY CP910 Printer driver_6.2.0.42.pkg".5. Follow the on-screen instructions to complete the installation.